Women's group storing free skater's sports gear (8)
I believe the answer is:
waterski
'sports gear' is the definition.
(type of sports gear)
'women's group storing free skater's' is the wordplay.
'women's group' becomes 'wi' (Women's Institute).
'storing' is an insertion indicator.
'free' indicates an anagram.
'skater' anagrammed gives 'atersk'.
'wi' placed around 'atersk' is 'WATERSKI'.
(Other definitions for waterski that I've seen before include "Engage in sport" , "Take part in a sport" .)